How to Reverse an Array in JavaScript? – Letstacle

How to Reverse an Array in JavaScript? – Letstacle 0 HomeLive Programming HelpComputer Science Homework HelpPython Homework HelpPython Homework SolvedJava Homework HelpJava Homework solvedC++ Homework HelpR Homework HelpPHP Homework HelpHTML Homework HelpJavaScript Homework HelpSQL Homework HelpDo My Programming HomeworkAndroid Assignment HelpAboutHow it WorksCareersArticlesJavaJavaScriptPythonC++hackerrank solutionsHTMLMathsDatabase AcademyPython Tutor ReviewsRecent ReviewsLeave a Review PaymentFAQs Contact / Get Help How to Reverse an Array in JavaScript? August 7, 2021 0 Comments Working with Arrays can be a mess sometimes. In this tutorial, you will learn two ways to reverse an Array in JavaScript.First, using reverse() functionSecond, using a simple for loopUsing reverse() functionThe easiest way to reverse an array in JavaScript is to use the reverse() function. This function is built-in and is supported in all browsers.The syntax is really easy, you just need to use a dot(.) operator with the array you want to reverse. Making a call to the  reverse() function.Let’s see few JavaScript examples to reverse the array.Example 1: Reverse a number Array let array = [1,2,3,4,5,6,7]; // given array array.reverse(); // using reverse method console.log(array); // [7,6,5,4,3,2,1] Example 2: Reverse an Array of Objects let arrayObj = [ {name:’a’, age:1}, {name:’b’, age:2}, {name:’c’, age:3} ]; arrayObj.reverse(); console.log(arrayObj); // [ { name: ‘c’, age: 3 }, { name: ‘b’, age: 2 }, { name: ‘a’, age: 1 } ] Whether the array contains a number, String or any objects, the reverse() function will always reverse it.Note: The original array is overwritten with the value in reverse order.What if, you want to reverse an array without using a library/in-build function.Using for Loop to Reverse an Array in JavaScriptAs you know, We can use a loop to traverse through an array. Therefore, the value in an array can be obtained in the desired way we want.Let’s use for loop to reverse an array. Moreover, we need a reverse for loop.As we want elements starting from the last index to the very first index. And an empty array for storing the values from the original array. let array = [‘a’,’b’,’c’,’d’,’e’]; // orignal array let reverseArray= []; // an emplty array let index=0; // helper index for ( let i=array.length-1; i>=0; i–){ // reverse loop reverseArray[index]=array[i]; // save values from last index index++; // increment index } console.log(reverseArray); In the above example, the loop started from (array.length-1) which is the last index, and loops until the index becomes greater than equal (>=)  to zero .i.e the very first index.Finally, we hope this tutorial helped you to reverse an array. Let us know in the comments if you face any doubts.Also, You may be interested to learn how to check for Duplicates in Array JavaScriptLike this article? Follow us on Facebook and LinkedIn. You can also subscribe to our weekly FeedShare Article: Tags:how to in JavaScript reverse array August 7, 2021JavaScript Comment | Single & Multi Line August 11, 2021What does return do in JavaScript? Leave a Reply Cancel replyLog In Related Articles September 17, 2021JavaScript | Function not defined September 14, 2021JavaScript | Array Length September 8, 2021JavaScript | Get Last Element of Array September 7, 2021JavaScript Clear Array | 3 Ways to Empty Array August 22, 2021JavaScript Square Root | Usage, Syntax & Program March 17, 2022How to Run JavaScript in Visual Studio Code? CategoriesBlog C++ Commerce Help Database Do my Economics Help hackerrank solutions HTML Java JavaScript Java solved Maths Maths Help Node JS Online Tutor Programming Help Python Python solved Quiz Uncategorized Recent Comments On LetstacleJimenez on Computer Science Homework Help | Computer Science HelpLetstacle Team on Python Homework Help | Help with Python HomeworkLetstacle Team on Python Homework Help | Help with Python HomeworkLetstacle Team on Python Homework Help | Help with Python HomeworkLetstacle Team on Python Homework Help | Help with Python HomeworkImler Miller on Python Homework Help | Help with Python HomeworkFeatured posts April 28, 2022Visual Basic Homework Help | VB.net Coding Help April 28, 2022Computer Science Homework Help | Computer Science Help February 15, 2022Do my Java Homework | Get Java Homework Help OnlineCategoriesBlog C++ Commerce Help Database Do my Economics Help hackerrank solutions HTML Java JavaScript Java solved Maths Maths Help Node JS Online Tutor Programming Help Python Python solved Quiz UncategorizedQuick LinksMake PaymentLeave a ReviewStoreTop Rated Rated 4.9 out of 5 Made with <3 creative team @ 2021 Letstacle.comTerms of Use | Disclaimer | Privacy Policy

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